AO4812L_101

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AO4812L_101 is a MOSFET array, it has a wide range of applications due to its omnidirectional power switch capabilities. This article will discuss the application fields and working principles of AO4812L_101.

Application Fields

The AO4812L_101 is a MOSFET array. It is mostly used in applications related to power switch. It can be used as a motor driver, drive circuit for actuators, or a power switch for AC/DC high power supply equipment. In addition, its alternating current (AC) power switch function makes it a perfect device for applications related to load signal processing, like audio signal processing systems. AO4812L_101 is also suitable for AC signal input (ACSI) applications, AC signal feedback control, signal acquisition and signal processing. It has wide applications in the fields of power switch, signal control, and circuit protection.

Working Principle

As a MOSFET array device, AO4812L_101 contains two independent complete sets of MOSFETs. It has a total of four MOSFETs, each with a gate drive, with two P-channel MOSFETs and two N-channel MOSFETs. Each pair of MOSFETs can be used as a low-side and high-side drive circuit to provide a complete turn-on and turn-off process when necessary. In general, its working principle can be described as follows:

• The gate voltage of one MOSFET will be set to a high voltage and the other to a low voltage to achieve a turn-on or turn-off status.
• The output of the controlled power supply will be connected to the high side and low side through two MOSFETs.
• The signal input will be acquired in the form of low voltage (LV) signals, and the output voltage will be adjusted from high to low by the LV signal.
• When the signal input is activated, the gate of the high side MOSFET will be driven to low voltage and the gate of the low side MOSFET will be driven to a high voltage. This will cause the power supply to be switched in a similar way.

As mentioned earlier, the AO4812L_101 also has AC signal input (ACSI) applications. In this case, the AC input signal is first converted to a DC signal and then the AC/DC transfer is conducted. Following this, the signal is further converted to low voltage signals and fed to the gate of the MOSFETs. The DC output is then adjusted to the desired level.

Conclusion

The AO4812L_101 is a MOSFET array, and it has a broad range of applications. Its chief application lies in power switching, but it can also be used for load signal processing, AC signal input (ACSI) applications, AC signal feedback control, signal acquisition and signal processing. Its working principle is based on connecting two MOSFETs to output, and then adjusting the output voltage through the signal input.

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